Manual page improvements for the file_contexts and related policy
configuration files (section 5):
- create links to selabel_file.5 not only for file_contexts.5 but
also for the other optional policy configuration files (including
the so-called file contexts "substitution" files);
- clarify the above mentioned manual page(s), in particular relatively
to the action performed by the so-called file contexts "substitution"
policy configuration files (aliasing/equivalence versus substitution);
- improve the explanation of the form that the "substitution" files
shall have.
Signed-off-by: Guido Trentalancia <guido@trentalancia.com>
Signed-off-by: Eric Paris <eparis@redhat.com>